code: def close_or_save(pdf, fig):
      if pdf_output:
          pdf.savefig(fig)
  
imports: import os
  import numpy
  from statsmodels.duration.survfunc import SurvfuncRight, survdiff, plot_survfunc, CumIncidenceRight
  from numpy.testing import assert_allclose
  import pandas
  import pytest
label_desc: Use image node_id 1 for calling a global function with example usage: close_or_save(pdf, fig) without return types